Structural panel core



FIG. 1 is a top, front, right side perspective view of a structural panel core showing my new design;

FIG. 2 is a top, rear, left side perspective view thereof;

FIG. 3 is a front elevation view thereof;

FIG. 4 is a rear elevation view thereof;

FIG. 5 is a left side elevation view thereof;

FIG. 6 is a right side elevation view thereof;

FIG. 7 is a top plan view thereof;

FIG. 8 is a bottom plan view thereof;

FIG. 9 is a cross-sectional view taken along line 9-9 of FIG. 7; and,

FIG. 10 is a cross-sectional view taken along line 10-10 of FIG. 7.

The broken lines around the perimeters of the drawings depict portions of the structural panel core that form no part of the claimed design. 

CLAIM The ornamental design for a structural panel core, as shown and described. 